The GFS 0.25 grid "b" files are now also available for use through the GFS grib filter. The endpoint we need to use is filter_gfs_0p25b.pl (notice the "b" in there).

Quoting the official NCEP communique:

"GFS users,

NCEP has made the GFS quarter degree secondary parameters (gfs.tCCz.pgrb2b.0p25.fFFF) available through grib filter to allow for partial downloads. We hope that users will take advantage of this to alleviate some of the bandwidth issues we are experiencing during peak periods. You can start using the path through here -

Is it possible to have a bit more detailed information on how to implement GFS 0.25 grid tiles? You know for the newbies...
Do we need to edit the gfs-para_gribinfo.conf and Vtable.GFSPARA files?
thanks

Where $1 is first argument, $2 second, and so on... Then I use START_YYYY and others inside main script to download GFS and do other usefull stuff with run date/time information. Of course you can do it all within single script if you prefer.